Gap Analysis of Interconnecting Underlay with Cloud Overlay
draft-ietf-rtgwg-net2cloud-gap-analysis-00

Document Type Active Internet-Draft (rtgwg WG)
Last updated 2019-02-12
Replaces draft-dm-net2cloud-gap-analysis
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Network Working Group                                         L. Dunbar
Internet Draft                                                 A. Malis
Intended status: Informational                                   Huawei
Expires: August 6, 2019                                    C. Jacquenet
                                                                  Orange
                                                      February 12, 2019

        Gap Analysis of Interconnecting Underlay with Cloud Overlay
                    draft-ietf-rtgwg-net2cloud-gap-analysis-00

Abstract

   This document analyzes the technological gaps when using SD-WAN to
   interconnect workloads & apps hosted in various locations,
   especially cloud data centers when the network service providers do
   not have or have limited physical infrastructure to reach the
   locations [Net2Cloud-problem].

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on July 6, 2019.

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Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors. All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
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Table of Contents

   1. Introduction...................................................2
   2. Conventions used in this document..............................3
   3. Gap Analysis of C-PEs Registration Protocol....................4
   4. Gap Analysis in aggregating VPN paths and Internet paths.......5
      4.1. Gap analysis of Using BGP to cover SD-WAN paths...........6
      4.2. Gaps in preventing attacks from Internet facing ports.....9
   5. Gap analysis of CPEs not directly connected to VPN PEs........10
      5.1. Gap Analysis of Floating PEs to connect to Remote CPEs...11
      5.2. NAT Traversal............................................12
      5.3. Complication of using BGP between PEs and remote CPEs via
      Internet......................................................12
      5.4. Designated Forwarder to the remote edges.................13
      5.5. Traffic Path Management..................................13
   6. Manageability Considerations..................................14
   7. Security Considerations.......................................14
   8. IANA Considerations...........................................14
   9. References....................................................14
      9.1. Normative References.....................................15
      9.2. Informative References...................................15
   10. Acknowledgments..............................................16

1. Introduction

   [Net2Cloud-Problem] describes the problems that enterprises face
   today in transitioning their IT infrastructure to support digital

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Internet-Draft          Net2Cloud Gap Analysis            February 2019

   economy, such as connecting enterprises' branch offices to dynamic
   workloads in different Cloud DCs.

   This document analyzes the technological gaps to interconnect
   dynamic workloads & apps hosted in various locations and in Cloud
   DCs that the enterprise existing VPN service provider might not have
   or have limited the physical infrastructure to reach. When
   enterprise' VPN service providers do not have or have insufficient
   bandwidth to reach a location, SD-WAN is emerged as way to aggregate
   bandwidth of multiple networks, such as MPLS VPN, Public Internet,
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